[BAF] Scope Crosshair on AS50 wrong size, miscalibrated.

After having used most of the mil-dot equipped sniper rifles in the DayZ mod, I consider myself reasonably familiar with how mil-dot ranging works, and I am mostly able to pull off the required arithmetic in my head.

Just recently I came across an AS50, and not too much later I was given an opportunity to test it out on some hostile survivors.

I judged the distance carefully. A walking zombie close to my targets appeared 2 mils high in my scope. I zeroed for 1000m, took aim, and fired.

The shot went miles above their heads, and I was perplexed.. Okay, I thought, it might have been a bit off. Trying again with the scope zeroed at 800m.

Again the shot went way too high!

Something was amiss, I thought to myself, as I set the scope for 700m and fired again. This time I hit, albeit not exactly where I aimed, but close enough.

Later in the evening I decided to go into the Shooting Range custom mission to test my theory that something was off about the AS50, and sure enough—its scope was off by about 1 mil at 500m, the cause of my wildly inaccurate judgement of distance earlier.

I decided to try out the other rifles present in DayZ as well, to compare the results, and it showed that they are all accurate when zoomed in, except for the AS50.

You can check out my findings for yourself here.

I've also made a bugreport on Dev-Heaven.

I can confirm this "bug". BAF should use NATO standards and thus there should be no reason why the scope deviates, unless I'm missing something? (British snipers: feel free to join the discussion).

So far I've tested the following:

-M24, M40A3 (DMR), M107 use correct Mil-Dot scope for range estimation.

-With M24 and M107 1 mil equals an offset of 100 meters,

-with DMR it equals something more like 80 meters.

-AS50 uses different range system and 1 mil appears to give an offset of about 180 meters, or 200 yards.

Results are only experimental and tonight I will actually try to confirm each number myself. I'm still not sure for example if 1 mil offset of DMR gives a range of 480 meters or 500 meters, but first firing tests indicate the first.

[off-topic] I use a height of 1.8 meter for a male and 1.7 meters for a female. Sounds more logical to me, but I hope BIS didn't model everyone to be 2.0 meter...

Hey，above guys，the AS50 is using a step scope, if you want to use the mildot to judge distance, then you have to press the numpad "+" key, then it will be accuate.

Hey，above guys，the AS50 is using a step scope, if you want to use the mildot to judge distance, then you have to press the numpad "+" key, then it will be accuate.

I'm not sure if you actually looked at the gallery images, but the scope is not accurate even when zoomed. Try it for yourself.

I'm not sure if you actually looked at the gallery images, but the scope is not accurate even when zoomed. Try it for yourself.

---Yes，you r right, i rushed to judgement. I just checked the AS50 and LRR, which all has a wrong optic zoom rate. And actually, it's very easy to tweak, just change the parameter:discretefov[] = { 0.075500, 0.024900 } into : discretefov[] = { 0.075500, 0.018000 }; Then, you got the right mildot measure distance.

A correction factor of around 1.36 appears to be right, that's what you suggest with changing the discretefov, perhaps it can be patched. I doubt modified parameters work for multiplayer, so I guess your discretefov solution only works for singleplayer. Good find nevertheless.

Yeah, good find! I'm not really privy to how the discretefov setting works, but won't this mess up all the other mildot rifles?

Nope, it won't mess up other mildots, but as Bravo mentioned, if you want to play Day-z, its servers wouldn't let you in if you revised any config parameters, only works for singleplayer. So, the best way is to pray BIS could tweak it in the next updating patch.

I found this thread through the DayZ forums, so please forgive me if I'm a total dumbass.

You stated that the range is off by about 1.36, what do you mean by this? Should we multiply the mildots by this number and then use the resulting number to calculate the distance? For example: a crouched target is 2 mildots high in the zoomed AS50 scope, the normal calculation for non-bugged scopes would be (0.9 x 1000) / 2= 450m, but in this case we should do [(0.9 x 1000) / (2 x 1.36)] = 330?

Am I close? I'm unable to test it right now as I'm not at home, but I was thinking of compiling a simple distance / mildots table for the bugged scope on the AS50 as it's definitely my sniper of choice and I don't want to keep getting out my rangefinder for it.

Thanks for this thread,

Have a nice day

Some time ago I was trying to use the LRR and had the same issue. While I was curious about something being off I just began to avoid the LRR thinking I was doing something wrong. I'm glad to know I was not.

I found this thread through the DayZ forums, so please forgive me if I'm a total dumbass.

You stated that the range is off by about 1.36, what do you mean by this? Should we multiply the mildots by this number and then use the resulting number to calculate the distance? For example: a crouched target is 2 mildots high in the zoomed AS50 scope, the normal calculation for non-bugged scopes would be (0.9 x 1000) / 2= 450m, but in this case we should do [(0.9 x 1000) / (2 x 1.36)] = 330?

Am I close? I'm unable to test it right now as I'm not at home, but I was thinking of compiling a simple distance / mildots table for the bugged scope on the AS50 as it's definitely my sniper of choice and I don't want to keep getting out my rangefinder for it.

Thanks for this thread,

Have a nice day

I'm not sure what he means by that myself, but I've found that if you assume a target height of 1.4 for a standing target, the scope seems accurate. (e.g. (1.4*1000)/target height in mils = distance.)